.page-faq {
  --faq-line: rgba(53, 230, 224, 0.16);
  --faq-line-soft: rgba(43, 82, 99, 0.55);
  --faq-surface: rgba(14, 23, 32, 0.82);
  --faq-gap: clamp(20px, 3vw, 34px);

  position: relative;
  overflow-x: hidden;
  padding: clamp(20px, 4vw, 40px) 0 clamp(48px, 8vw, 96px);
  color: var(--ice);
  background:
    radial-gradient(120% 70% at 88% -12%, rgba(11, 42, 36, 0.95) 0%, rgba(7, 28, 47, 0) 62%),
    var(--deep);
}

.page-faq img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-faq .mono {
  font-family: var(--font-mono);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--blueprint-line);
}

.page-faq .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 48px) 0 clamp(24px, 4vw, 40px);
  margin-bottom: clamp(16px, 3vw, 28px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -18%;
  width: min(620px, 82vw);
  height: min(620px, 82vw);
  background: linear-gradient(122deg, rgba(53, 230, 224, 0.16), rgba(255, 107, 74, 0.11) 70%, transparent);
  clip-path: polygon(22% 0, 100% 0, 100% 74%, 0 100%);
  border-radius: 44% 0 46% 12%;
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .kicker {
  display: inline-block;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-faq .faq-title {
  margin: 0 0 20px;
  font-family: var(--font-sans);
  font-size: clamp(1.9rem, 5.6vw, 3.2rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-faq .faq-title-accent {
  color: var(--sand);
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.page-faq .faq-lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(14.5px, 1.6vw, 16px);
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 布局：目录 + 正文 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
  padding-top: clamp(12px, 2vw, 24px);
}

.page-faq .faq-index-title {
  margin: 0 0 10px;
  padding-left: 2px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--blueprint-line);
  text-transform: uppercase;
}

.page-faq .faq-index ol {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--ice);
  border-color: rgba(53, 230, 224, 0.55);
  background: rgba(53, 230, 224, 0.07);
}

.page-faq .faq-index .idx {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  opacity: 0.85;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding: clamp(22px, 4vw, 36px) 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-faq .faq-sec-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}

.page-faq .faq-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3.4vw, 1.7rem);
  line-height: 1;
  color: var(--blueprint-line);
  transition: color 0.35s var(--ease);
}

.page-faq .faq-section.is-current .faq-num {
  color: var(--coral);
}

.page-faq .faq-sec-head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.25rem, 3.2vw, 1.75rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-faq .faq-section p,
.page-faq .section-lede {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.88;
  color: var(--mist);
}

.page-faq .section-lede {
  max-width: 64ch;
  margin-bottom: 22px;
}

/* ---------- 01 入口 ---------- */
.page-faq .entry-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .topic {
  padding: 14px 16px;
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-card);
  background: rgba(14, 23, 32, 0.7);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .topic:hover {
  border-color: rgba(53, 230, 224, 0.45);
  transform: translateY(-2px);
}

.page-faq .topic b {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .topic span {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .entry-figure {
  border-radius: var(--radius-panel);
  overflow: hidden;
  border: 1px solid rgba(53, 230, 224, 0.28);
  position: relative;
}

.page-faq .entry-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(53, 230, 224, 0.16), rgba(255, 107, 74, 0.14));
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-faq .entry-figure img {
  width: 100%;
  aspect-ratio: 5 / 6;
  object-fit: cover;
}

.page-faq .media-caption {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  background: rgba(7, 28, 47, 0.9);
}

/* ---------- 02 步骤 ---------- */
.page-faq .steps {
  display: grid;
  gap: 0;
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 22px;
}

.page-faq .step:last-child {
  padding-bottom: 0;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 40px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, rgba(53, 230, 224, 0.32), rgba(43, 82, 99, 0.1));
}

.page-faq .step:last-child::before {
  display: none;
}

.page-faq .step-pill {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: var(--radius-pill);
  background: linear-gradient(142deg, var(--cyan), #7ff3ee);
  color: var(--deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-faq .step-body h3 {
  margin: 4px 0 6px;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ice);
}

.page-faq .step-body p {
  font-size: 14px;
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-acc {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-card);
  background: var(--faq-surface);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(53, 230, 224, 0.48);
  background: rgba(14, 23, 32, 0.96);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ice);
  transition: background 0.2s var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  background: rgba(53, 230, 224, 0.06);
}

.page-faq .faq-q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q-num {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .faq-plus {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--blueprint-line);
}

.page-faq .faq-plus::before,
.page-faq .faq-plus::after {
  content: "";
  position: absolute;
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1.5px;
  border-radius: 2px;
  background: var(--cyan);
  transform: translateY(-50%);
}

.page-faq .faq-plus::after {
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-plus::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 18px 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

/* ---------- 03 设备 ---------- */
.page-faq .device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--faq-gap);
}

.page-faq .device-card {
  padding: clamp(18px, 3vw, 24px);
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-panel);
  background: var(--pitch);
}

.page-faq .device-card--apple {
  background: linear-gradient(158deg, rgba(11, 42, 36, 0.85), var(--pitch) 62%);
}

.page-faq .device-card h3 {
  margin: 14px 0 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .device-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .device-card li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .device-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-faq .device-card--apple li::before {
  background: var(--coral);
}

/* ---------- 04 对比 ---------- */
.page-faq .dim-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 6px;
  padding: 0;
  list-style: none;
}

.page-faq .dim-list li {
  padding: 7px 15px;
  border: 1px solid rgba(53, 230, 224, 0.28);
  border-radius: var(--radius-pill);
  background: rgba(53, 230, 224, 0.06);
  font-size: 13px;
  color: var(--ice);
}

.page-faq .inline-link {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--mist);
}

.page-faq .inline-link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 224, 0.4);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .inline-link a:hover,
.page-faq .inline-link a:focus-visible {
  color: var(--ice);
  border-color: var(--coral);
}

/* ---------- 05 自查清单 ---------- */
.page-faq .checklist {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: chk;
}

.page-faq .checklist li {
  counter-increment: chk;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-card);
  background: rgba(14, 23, 32, 0.62);
  transition: border-color 0.25s var(--ease);
}

.page-faq .checklist li:hover {
  border-color: rgba(255, 107, 74, 0.45);
}

.page-faq .checklist li::before {
  content: counter(chk, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--coral);
}

.page-faq .checklist strong {
  display: block;
  margin-bottom: 4px;
  font-size: 14.5px;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .checklist p {
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 06 联系 ---------- */
.page-faq .help-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 28px);
  padding: clamp(20px, 4vw, 32px);
  border: 1px solid rgba(255, 107, 74, 0.34);
  border-radius: var(--radius-panel);
  background: linear-gradient(152deg, rgba(255, 107, 74, 0.12), rgba(14, 23, 32, 0.9) 62%);
}

.page-faq .help-copy h3 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .prep-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .prep-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .prep-dot {
  flex: none;
  width: 7px;
  height: 7px;
  margin-top: 0.55em;
  border-radius: 50%;
  background: var(--state-green);
  box-shadow: 0 0 0 3px rgba(91, 228, 155, 0.14);
}

.page-faq .help-note {
  font-size: 13px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .contact-label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 13.5px;
  color: var(--mist);
}

.page-faq .contact-line span {
  min-width: 34px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blueprint-line);
}

.page-faq .contact-line a,
.page-faq .contact-line strong {
  color: var(--ice);
  font-weight: 700;
  text-decoration: none;
  word-break: break-all;
}

.page-faq .contact-line a {
  border-bottom: 1px solid rgba(53, 230, 224, 0.4);
}

.page-faq .contact-line a:hover,
.page-faq .contact-line a:focus-visible {
  color: var(--cyan);
}

.page-faq .help-contact .help-note {
  margin: 10px 0 0;
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 页尾休息区 ---------- */
.page-faq .faq-rest {
  position: relative;
  margin: clamp(32px, 6vw, 64px) 0 0;
  border-radius: var(--radius-panel);
  overflow: hidden;
  border: 1px solid var(--faq-line-soft);
}

.page-faq .faq-rest img {
  width: 100%;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-faq .faq-rest figcaption {
  position: absolute;
  left: clamp(16px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 24px);
  max-width: 30ch;
  font-family: var(--font-serif);
  font-size: clamp(13px, 1.6vw, 15px);
  line-height: 1.7;
  color: var(--sand);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    border-left: 1px solid var(--faq-line-soft);
  }

  .page-faq .faq-index-title {
    margin-left: 16px;
  }

  .page-faq .faq-index ol {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index a {
    width: 100%;
    margin-left: -1px;
    padding: 10px 14px 10px 16px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
    white-space: normal;
  }

  .page-faq .faq-index a:hover,
  .page-faq .faq-index a:focus-visible {
    border-left-color: var(--cyan);
  }

  .page-faq .entry-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-section {
    padding: clamp(32px, 4vw, 48px) 0;
  }

  .page-faq .checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .help-panel {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-faq .help-contact {
    padding-left: clamp(18px, 3vw, 28px);
    border-left: 1px solid rgba(53, 230, 224, 0.2);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero {
    padding-bottom: clamp(32px, 4vw, 52px);
  }

  .page-faq .faq-lede {
    max-width: 58ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .topic,
  .page-faq .faq-index a,
  .page-faq .faq-plus::after,
  .page-faq .faq-num {
    transition: none;
  }
}
<<<END>>>